/*
	The MIT License

	Copyright (c) 2007 Mike Chambers

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in
	all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	THE SOFTWARE.
*/

#import "URLService.h"
#import "BitlyService.h"

#define BITLY_URL "http://bit.ly/api?url="

//provides an interface to the urltea.com service
@implementation BitlyService : URLService

//takes a URL and uses the urltea.com service to shorten it. If an error occurs
//nil will be returned, and information will be put into the specified
//error object
-(NSString *) shortenURL: (NSString *) sURL error: (NSError **) error
{
	//base url for bit.ly api
	NSString *baseURL = @BITLY_URL;
	
	//complete url to api with specified url to shorten
	NSString *completeURL = [baseURL stringByAppendingString:[URLService urlencode:sURL]];
	
	//create NSURL to call api
	NSURL *url = [[NSURL alloc] initWithString:completeURL];
	
	//this will hold any errors that occur
	NSError *e;
	
	//retrieve the new url string from the api
	NSString *out = [super retrieveURL:url error:&e];
	
	//make sure that the call was sucessfuly
	if(out == nil)
	{
		//create a new error with info about what went wrong
		*error = [NSError errorWithDomain:@"turlError" code:1 userInfo:nil];
		return nil;
	}
	
	//return the new url
	return out;
}

@end
